okay so, my boyfriend and i haven't had sex,
we do stuff like, dry humping. the last time we did it was 4 days ago.
we have done it quite a few times, and i always have my underwear on, and usually pants.
i just noticed a yellowish, kinda flat blister like thing below the entrance or whatever to my vagina.
it doesn't hurt at all, or itch.
i'm quite scared to be honest.
please help?